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Lay masonry units using best concrete masonry practices. Install only
quality units; reject all defective units. Proper care shall be taken in
handling to prevent marring or damaging faces, edges and corners.
Lighting: Provide adequate lighting for masonry work by placing all lighting
at a reasonable distance from the wall for even illumination. Do not use trough
lighting.
Draw units from more than one pallet at a time during installation. All exterior
mortar shall include W.R. Grace DRY-BLOCK® water-repellent additive added
to each batch in the appropriate dosage rates for mortar type N per the
manufacturer's instructions. Refer to NCMA TEK-3-1C for Hot and Cold weather
construction practices.
Lay PRAIRIE stone units with the faces level, plumb and true to a line strung
horizontally. Units shall have uniform joints both horizontally and vertically on the
finished side of the wall. Align carefully tooled joints on the finished side of the wall.
Cutting: Make all unit cuts, including those for bonding, holes, boxes, etc.,
with motor-driven masonry saws, using either an abrasive or diamond blade.
Cut neatly and locate for best appearance.
Tool joints neatly after they are finger-hard to make them straight and uniform.
Size and place cut pieces appropriately to maintain consistency and bond.
Complete masonry construction using procedures and workmanship consistent
with the best masonry practices.
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